4.0mm 5.5mm 7.0mm 8.0mm Hex Nut Driver Head for 1/4" Drive Drill Screwdrivers Bit Electric Screwgun/Power Drill RC Repair Working 4 PCS

【Multiple Sizes】 This wrench hex bit set includes different sizes: 4.0mm 5.5mm 7.0mm 8.0mm, meet your different needs.Works with any 1/4" Drive Drill, 【Upgrade Version RC Tool Kit】The driver head is precision machined from high speed steel and titanium, hardness over 60, resistant to peeling and breaking, no rust and durable, 【Widely Application】Fit for electric screwdrivers, and screwdrivers, electric drills, air drills and so forth, used in engineering, machinery, maintenance of household appliances and other production lines, 【Clearly Marked】The wrench size is engraved on each driver head for easy identification, make sure you have the right tools at hand when you use them, 【Customer Service】Please rest assured to purchase, any questions, whether it is a product or a problem during use, please feel free to contact us, we will provide you with the best quality service in the shortest possible time